
      header{
        background-color: black;
        font-size:20px;
        padding:15px;
        color: indianred;
      }
      header, .form-group{
        margin-bottom: 3%;
      }
      #right_header {
          height: 20%;
          width: 20%;
          margin-left: 200px;
      }
      .form-group{
        width:50%;
      }
      .table{
          background-color: lightgray;
      }
      #body{
        margin-left:3%;
        margin-right:3%;
        color:indianred;
      }
    .background{
        background-image: url("https://blockchaininvestor.club/wp-content/uploads/2018/02/blockchain-background.jpg");
    }
      .form-control{
        margin: 8px;
      }
      #center_header{
        width:20%;
        font-size:15px;
        margin-left: -50px;
      }
      #left_header{
        margin-left:35px;
        width:40%;
        display:inline-block;
      } 
      #id {
        width:49%;
        display: inline-block;
      }
      table {
          font-family: arial, sans-serif;
          border-collapse: collapse;
          width: 100%;
          color: black
      }
      td, th {
          border: 1px solid #dddddd;
          text-align: left;
          padding: 8px;
      }
      tr:nth-child(even) {
          background-color: cornflowerblue;
          border-color: black;
          border-bottom-width: 5em;
      }
    #footer {
        text-anchor: end;
        margin-left:35px;
        width:40%;
        display:inline-block;
    }